Engineered shapes from metallic alloys
US8323427B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2009 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Sep 1, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed embodiments disclose processes for making shaped metal alloy parts, and deal more particularly with forming features and reducing residual stresses in such parts. Residual stresses introduced into a metal alloy part by heat treatment, which may include solution annealing and quenching, are reduced by processes that plastically deform the part while forming part features. An embodiment comprises: producing a metal alloy blank; subjecting the blank to a process that introduces residual stresses into the blank and plastically deforming the blank to reduce the residual stresses in the blank. Embodiments comprise: subjecting a part to a heat treatment that introduces residual stresses in the part; and age forming the part to shape the part and reduce the residual stresses, incrementally forging at least one feature into the part and reducing the residual stresses in the part, friction welding the part, or gauge rolling the cast part to desired dimensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.